HYPEREUTECTIC DEFORMABLE ALUMINUM ALLOY Russian patent published in 2023 - IPC C22C21/00 

FIELD: metallurgy.

SUBSTANCE: metallurgy of materials based on aluminum. Invention can be used to manufacture deformable semi-finished products intended for obtaining critical parts operating under wear conditions and elevated temperatures up to 300-350°C, in particular parts of automobile engines, shipbuilding, water intake fittings, heating radiators, etc. Deformable aluminum-based alloy contains, in % by weight: calcium 7.5-8.5, manganese 1.5-2.5, nickel 0.8-1.2, the rest is aluminum, the alloy has a structure containing aluminum-calcium eutectic as a basis and primary crystals of a calcium-containing phase of a compact form with an average size of not more than 30 microns in an amount of 5 to 8% of volume.

EFFECT: creation of a hypereutectic aluminum-based alloy with good ductility and low thermal expansion coefficient.

3 cl, 2 ex, 3 tbl, 2 dwg